Mold.



No. 808,167. PATBNTBD DEC. 26, 1905. E. F. NEVINS.

MOLD.

MPLIGATION FILED APR.17.1905.

2 SHEETS-SHEET 2.

Inventor.

by f/ l Attorneys Aform the body of the mold and the core in externally to one edge of the section, and

EDVARD FRANK NEVINS, OF BLUE RAPIDS, KANSAS.

MOLD.

Specification of Letters Patent.

Patented Dec. 26, 1905.

Application filed April 17, 1905. Serial NoZ 255,994.

To all [1f/m71?, z'ft 71mg/ concern:

Be it known that L EDwARD FRANK NEV- INs, a citizen ofthe United States, residing at Blue Rapids, in the county of Marshall and State of' Kansas, have invented a new and useful Mold, of which the following is a specification.

This invention relates to molds, and has for its object to provide certain new and useful improvements whereby the mold is particularly adapted for the production of' sewerpipes and the like. It is also proposed to sections which are capable of being conveniently assembled and set up for the reception of the material to be molded and also arranged to be conveniently disconnected and removed from the cast without liability of injury thereto.

Vith these and other objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size, and minor details may be made within the scope of the claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings, Figure 1 is a longitudinal sectional view of a mold embodying the features of the present invention. Fig. 2 is a cross-sectional view on the line2 2 of Fig. 1. Fig. 3 is a detail perspective view of one of the body-sections. Fig. 4 is a detail perspective view of one of the core-sections. Fig. 5 is a detail perspective view of the top member of the core. Fig. 6 is a detail perspective view of one of the crossheads for connecting the core-sections.

Like characters of reference designate corresponding parts in each and every figure of the drawings.

As embodied in the accompanying drawings it will be seen that the body of the present mold is tubular in form and made up of. two complementary longitudinal sections, each of which is designated 1 and is externally enlarged at oneend to form a bell portion 2. A series of slotted links 3 are hinged upon the exterior of the opposite side of the section there is a series of keepers 4, preferably in the nature of staples, which are de signed to be received through the slots ofthe l corresponding links on the other section, so as to detachably connect the sections, as clearly indicated in Fig. 2 of the drawings.

The core member of the mold is tubular in form and made up of three longitudinal sections, each of which is designated 5 and is provided upon its interior adjacent each end with opposite spring-clips 6, which are offset from the section and have their outer ends substantially flush with the respective longitudinal edges of .the core-section. 'By preference, these spring-clips are formed upon the ends of a metallic strip 7, soldered or otherwise secured to the inner face of the coresection, with its ends bent or offset to form the spring-clips. When three of the coresections are assembled, as shown in Fig. 2 of the drawings, the corresponding spring-clips register and constitute seats for the reception of terminal lugs or projections S upon a substantially triangular cross-head 9, which is fitted into the core, so as to connect the coresections at their inner faces, and thereby leave the exterior of the core free from proj ections.

In setting up the mold the body-sections 1 are connected and stood on end, with the bell portion 2 at the top, after which the core-sections are assembled and placed downwardly through the open top of the body, or the coresections may first be assembled and then the body fitted about the core. The core must of course be centered within the body, and then the material to be molded is poured into the annular space between the core and the body until the level of the material nearly reaches the bell portion 2 of the body, whereupon the bell portion of the core is fitted in place upon the latter. This bell portion is shown in Figs. 1 and 5 and consists of a band or cylindrical member 10, somewhat greater in diameter than the core and provided at its lower edge with an internal annular flange 11, the band and the flange being split or separated, as indicated at 12. Suitable fingers or projections 13 depend from the inner edge of the fiange 11. Upon the interior of the part 10 and at each side of the joint 12 there is a spring-clip 14, the two clips being registered and constituting a seat for the reception of a key 15, which is provided at its upper end with a laterally-extended flange or head 16 for convenience in driving the key in place and in prying the same out of the seat. The flange 11 is cleft radially at several points. as indicated at 17. With the bell of the core assembled, as in Fig. 5, it is placed upon the top of the core, with the pro jections or `lingers 13 fitting snugly the interior of the core, so as to hold the bell of the core centered within the bell of the moldbody. After the inner bell member has been fitted in place the mold is entirely filled with the material and permitted to stand until it has become set, whereupon the body of the mold and the core are removed.

ln removing the core the bell portion is lirst removed, the key 15 being disengaged from the clips 14, and then one end of the split bell is forced radially inward and pulled slightly outward, so that it may be drawn in wardly to overlap the other end of the bell, thereby to reduce the external ldiameter of the bell and permit of the latter being drawn out of the cast without damaging the interior thereof. It will now be understood that the flange 11 is cleft, as at 17, to permit of the necessary bending of the flange to permit of the compression of the bell prior to removing the same from the cast. The cross-heads 9 are then removed from their seats, so as to disconnect the core-sections and permit of the latter being conveniently drawn out of the cast. The body of the mold is of course removed by disengaging the slotted links 3 from the keepers, and may be removed prior to or after the removal of the core.

From the foregoing description it will be understood that the mold of the presentin vention is exceedingly simple and effective for the purpose designed, and the several sections may be formed of sheet metal, so as to render the mold both durable and inexpensive. 'Moreoven the several sections may be conveniently connected and assembled when setting up the mold and may also be readily disconnected and removed from the cast without liability of injury thereto.

' Having fully described the invention,what is claimed is- 1. A pipe-mold comprising a tubular body having a bell terminal, a core member terminating short of the bell terminal of the body,

`Vand a core-bell member for removable engagcment with that end of the core which is adjacent the bell terminal of the body, the core-bell member capable of'being contracted for withdrawing the same from a cast.

2. A pipe-mold comprising a tubular body having bell terminal, a core member terminating short of the bell terminal of the body, a split tubular bellcore to be removably fitted to that end of the core which is adjacent the bell terminal of the body, registered seats upon the interior of the corebcll member at opposite sides of the joint of the bell,

and a removable key capable of being vfitted ,l

in the seats to hold the bell in its normal condition, said bell capable of being contracted when a key is removed to permit removal of the bell from a cast.

3. A pipe-mold comprising a tubular body having a bell terminal, a tubular core terminating short of the bell terminal of the body, and a split tubular bell-core member of greater diameter than the core and provided with an internal annular flange to rest against that end of the core which is adjacent the bell terminal of the body, and means upon the interior of the bell-core member to detachably connect the ends thereof, the flange of the bell being cleft to permit contraction of said bell when the Jfastening means is released.

L1. A pipe-mold comprising a tubular body having a bell terminal, a tubular core terminatingshort of the bell terminal of the body, a split tubular core-bell member having an internal annular flange to rest against that end of the core which is adjacent the bell of the body, projections upon the inner edge of the flange to enter the core, registered seats upon the interior of the bell-core member at opposite sides of the joint thereof, anda removable key engaging the seats, the corebell member capable of being contracted when the key is removed to permit with.- drawal of the bell.

5. A mold having a tubular core made up of separable longitudinal sections, seats upon the inner sides of the core-sections, and a cross-head having means for detachable engagement with the seats to removably connect the core-sections. j

6. A mold having a tubular core made up of separable longitudinal sections, registered seats upon the interior of the core-sections at opposite sides of the joints thereof, and a crossehead having lateral projections for detachable engagement with the registered seats to removably connect the core-sections.

7. A mold having a tubular core divided into longitudinal separable sections, a band secured transversely within each core-section. with its ends offset to form seats adjacent the edges of the section, the corresponding seats of the sections being registered when the sections are set up, and a cross-head having lateral projections to detachably enter the seats and removably connect the coresections.

ln testimony that I claim the foregoing as my own l have hereto affixed my signature in the presence of two witnesses.

EDl/VARD FRANK NEVINS. lVitnesses:

C. M. HEATHMAN, F. O. VVAYNANT.

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